10 Best WhatsApp Automation Tools in India (2026): Pricing, Features & AI Chatbots

Looking for the best WhatsApp automation tools in India to generate leads, respond to customers automatically, send order updates, or grow your business? The right platform can help you reduce repetitive work, improve customer communication, and manage more conversations without hiring a large support team.

WhatsApp has become an important communication channel for Indian businesses. From online stores and coaching institutes to real estate agencies and digital marketing companies, businesses use it to answer customer questions, share product information, send reminders, and manage sales inquiries.

However, choosing the right WhatsApp automation software is not always easy. Some platforms focus on marketing campaigns, others specialize in customer support, and some provide AI-powered chatbots and integrations with business applications.

In this guide, we compare 10 WhatsApp automation tools worth evaluating in India in 2026. You will learn what each tool does, which businesses it suits, what to check before purchasing, and how to choose a solution that fits your budget.

Quick recommendation: Consider AiSensy or Interakt for WhatsApp marketing and business communication, WATI or Gallabox for team-based automation, and Twilio or the WhatsApp Business Platform for more customized integrations. Your best option depends on your workflow, technical skills, and total operating costs.

Quick Comparison: WhatsApp Automation Tools

Tool	Best For	Main Strength
AiSensy	Marketing teams	Campaigns and chatbots
Interakt	Small and growing businesses	Sales and customer conversations
WATI	Customer support teams	Shared inbox and automation
Gallabox	Growing businesses	No-code conversational workflows
DoubleTick	Sales teams	Team communication and sales workflows
Zoko	E-commerce businesses	WhatsApp commerce
Respond.io	Multi-channel teams	Unified customer conversations
Twilio	Developers	Programmable messaging
Make	Workflow automation	Connecting business applications
n8n	Advanced automation	Custom AI-powered workflows

Note: Features, integrations, plan limits, and prices can change. Verify current availability and pricing on each provider's official website before purchasing.

What Is WhatsApp Automation?

WhatsApp automation is the process of using software, predefined rules, integrations, and sometimes artificial intelligence to handle repetitive business conversations and tasks through WhatsApp.

Instead of manually answering every message, a business can configure automated responses, collect customer details, qualify leads, send order notifications, and route conversations to the right team member.

For example, imagine that you operate an online clothing store.

A customer asks about a product.
An automated workflow shares the product details.
The customer places an order.
Your system sends an order confirmation.
A shipping integration sends a tracking update.
The system requests feedback after delivery.

These tasks can be connected into a single workflow, reducing manual effort and helping customers receive timely information.

WhatsApp Automation vs. WhatsApp AI Chatbots

Although these terms are related, they are not identical.

Traditional automation follows predefined rules. For example, when a customer types "PRICE," the system sends a price list.

AI-powered automation can interpret natural-language questions, classify requests, retrieve information from a knowledge base, and help determine the next action.

A useful business system often combines both approaches. Rules handle predictable tasks, while AI helps with questions that require more flexible responses.

1. AiSensy: WhatsApp Marketing and Chatbot Automation

Website: aisensy.com

AiSensy is a WhatsApp marketing and engagement platform designed for businesses that want to manage campaigns, automate conversations, and communicate with customers through the WhatsApp Business Platform.

It is worth evaluating if your business regularly shares offers, follows up with leads, or needs a centralized interface for WhatsApp communication.

Key Features

WhatsApp marketing campaigns and broadcasts.
Chatbot and conversational automation options.
Customer contact management.
Shared inbox functionality on supported plans.
Template-message management.
AI-agent capabilities and integrations, subject to plan and add-on availability.

Who Should Use AiSensy?

AiSensy may suit online stores, education businesses, service providers, and marketing teams that want to manage customer communication without building an entire messaging application from scratch.

Example: Automating Course Inquiries

Suppose you run an online training institute.

A prospective student starts a WhatsApp conversation.
The automation asks which course interests them.
The system shares the relevant course information.
The student can request a counselor's assistance.
A team member takes over when personalized guidance is needed.

This workflow can reduce repetitive questions while keeping a human available for important conversations.

Pros

Designed for WhatsApp-focused customer engagement.
Useful campaign and chatbot capabilities.
Can support business workflows without extensive custom development.

Things to Check

Whether the required chatbot or AI functionality costs extra.
Monthly subscription charges and message fees.
Agent limits, integrations, and reporting features.

Verdict: Consider AiSensy if WhatsApp marketing and customer engagement are central to your business.

2. Interakt: WhatsApp Automation for Small Businesses

Website: interakt.shop

Interakt is a business messaging platform worth considering if you want to organize WhatsApp conversations, manage sales inquiries, and automate customer communication.

Small businesses often receive inquiries from several sources, including websites, social media, and advertising campaigns. Without a proper process, messages can be overlooked and leads can go cold.

Key Features to Evaluate

WhatsApp Business messaging.
Team inbox and conversation management.
Marketing campaigns and approved message templates.
Customer engagement workflows.
Available integrations with business applications.

Example: Automating Real Estate Leads

A real estate agency could create a workflow that collects basic property preferences from prospective buyers.

Ask which city or neighborhood the buyer prefers.
Collect the approximate budget.
Identify the preferred property type.
Route qualified inquiries to the appropriate agent.
Arrange a follow-up when the buyer requests one.

The result is a more organized lead-management process. The system should allow customers to reach a human agent whenever automated responses are insufficient.

Pros

Suitable for businesses that manage sales conversations.
Can help organize communication between team members.
Worth considering for growing businesses that need more structure than a personal messaging app provides.

Things to Check

Review the latest subscription plans, included agents, campaign limits, integrations, and message charges before choosing a plan.

Verdict: Interakt is worth comparing with other platforms if your priority is managing leads and customer conversations through WhatsApp.

3. WATI: WhatsApp Automation for Customer Support Teams

Website: wati.io

WATI is a WhatsApp Business Platform solution focused on business messaging, customer support, team collaboration, and automation.

It can be useful for companies where multiple employees need to handle customer conversations from a shared system.

Key Features to Investigate

Shared team inbox.
Automated replies and workflow features.
WhatsApp campaigns.
Customer conversation assignment.
Integration options and reporting.

Example: Automating Customer Support

Imagine a company that receives hundreds of questions about orders, refunds, and product availability.

A WhatsApp automation workflow can classify incoming requests into categories such as:

Order status.
Product information.
Returns and refunds.
Technical support.
Requests to speak to an employee.

Where supported integrations are available, the system can retrieve order information or send a request to another business application. Complex cases can be assigned to a human support agent.

Pros

Designed for organized team-based communication.
Useful for support and sales workflows.
Can reduce the need to manage every conversation manually.

Things to Check

Check the number of included agents, automation limits, integration availability, and the total monthly cost for your team.

Verdict: Consider WATI if several employees need to collaborate on WhatsApp customer support.

4. Gallabox: No-Code WhatsApp Workflow Automation

Website: gallabox.com

Gallabox is a conversational automation platform designed to help businesses manage customer engagement and build WhatsApp-based workflows.

It is worth evaluating if you want to create structured customer journeys without developing every interaction from scratch.

Potential Use Cases

Lead qualification.
Appointment booking workflows.
Customer onboarding.
Product inquiries.
Campaign-based engagement.
Automated follow-up processes.

Example: Appointment Booking

A clinic, consultancy, or training business can use a structured conversation to collect appointment preferences.

The customer requests an appointment.
The workflow collects the preferred date and time.
An available booking integration checks the schedule.
The system confirms the appointment after successful booking.
A reminder is sent according to the configured workflow and messaging rules.

Do not promise an appointment is confirmed unless the booking system has actually reserved the slot.

Pros

Useful for businesses exploring conversational workflows.
Can help standardize lead collection and follow-ups.
Worth considering when a no-code interface is important.

Things to Check

Confirm which workflow features, integrations, team seats, and AI capabilities are included in your chosen subscription.

Verdict: Gallabox is worth evaluating for businesses that want structured WhatsApp conversations and no-code automation.

5. DoubleTick: WhatsApp Sales and Team Communication

Website: doubletick.io

DoubleTick is a business messaging solution to investigate if your sales team needs to coordinate WhatsApp conversations, manage contacts, and improve follow-up processes.

For sales teams, the biggest challenge is not always generating new leads. It is making sure existing leads receive timely responses and that important conversations do not disappear in individual employees' inboxes.

Potential Use Cases

Sales lead management.
Customer follow-up reminders.
Team-based messaging.
Customer communication workflows.
Business contact management.

Example: Automating Sales Follow-Ups

A sales team can use an integrated workflow to record a new inquiry, assign it to an employee, and create a follow-up task.

If the customer has agreed to receive follow-up messages, the system can send an appropriate reminder using an approved template when required.

The team should also track whether the customer responded and stop unnecessary follow-ups when the conversation is complete.

Things to Check

Verify current features, supported integrations, team limits, message pricing, and the availability of automation features in each plan.

Verdict: Consider DoubleTick if team coordination and sales follow-ups are your main priorities.

6. Zoko: WhatsApp Automation for E-Commerce

Website: zoko.io

Zoko is a WhatsApp commerce platform worth evaluating if you sell products online and want to connect customer conversations with sales-related workflows.

E-commerce businesses can use messaging to answer product questions, share product information, support purchasing decisions, and communicate order updates.

Potential Use Cases

Product discovery and customer inquiries.
WhatsApp-based shopping experiences.
Order-related communication.
Customer support.
Sales follow-ups where permitted.

Example: Automating an Online Store

Suppose a customer asks whether a particular product is available.

A connected workflow could retrieve the current inventory from the store, provide the correct product information, and direct the customer to the appropriate checkout page.

After an order is successfully placed, the system can send an order confirmation using the relevant integration.

Inventory and order details should come from the actual store database, not from an AI model guessing the answer.

Things to Check

Check supported e-commerce integrations, product catalog capabilities, transaction workflows, subscription charges, and message fees.

Verdict: Zoko is worth investigating if WhatsApp plays an important role in your online sales process.

7. Respond.io: Multi-Channel Customer Communication

Website: respond.io

Respond.io is a customer conversation platform that helps businesses manage communication across supported messaging channels.

It may be a good fit for businesses that communicate with customers through WhatsApp and other channels and want to organize conversations in a centralized workspace.

Potential Use Cases

Managing conversations from multiple supported channels.
Routing inquiries to the right team.
Automating customer qualification.
Managing sales and support processes.
Connecting messaging with supported CRM systems.

Example: Centralizing Customer Inquiries

A digital marketing agency may receive inquiries through WhatsApp, website chat, and other messaging platforms.

A centralized system can help employees view conversations, identify the source of an inquiry, assign responsibility, and track follow-up tasks.

Before subscribing, verify which channels, integrations, and automation capabilities are available on the selected plan.

Verdict: Consider Respond.io if you need more than WhatsApp alone and want a unified customer communication workflow.

8. Twilio: Programmable WhatsApp Automation

Website: twilio.com/whatsapp

Twilio provides programmable communication services that developers can use to build applications and messaging workflows.

Unlike a ready-made business messaging dashboard, a programmable platform is particularly useful when you need to connect WhatsApp with your own website, database, CRM, or internal software.

What Can You Build?

Automated order notifications.
Appointment reminders.
Customer verification workflows.
CRM-triggered messaging.
Custom customer support integrations.
AI-powered messaging applications.

Example: Connecting WhatsApp to a CRM

When a new lead enters your CRM, an application can trigger an approved WhatsApp template message, provided the required permissions and messaging conditions are satisfied.

Replies can be processed by your application and associated with the correct lead record.

This approach gives developers flexibility, but it also requires technical setup, error handling, secure credential management, and ongoing maintenance.

Pros

Suitable for custom integrations.
Useful for developers building messaging applications.
Offers programmatic control over supported communication workflows.

Things to Check

Review developer requirements, API charges, message fees, webhook configuration, and the cost of maintaining your application.

Verdict: Twilio is worth considering when you need custom WhatsApp functionality and have the technical resources to implement it.

9. Make: Visual Workflow Automation

Website: make.com

Make is a visual automation platform that connects supported applications through configurable workflows.

It can help connect WhatsApp-related events to spreadsheets, CRMs, email services, databases, and other applications when the required integrations are available.

Make is not itself a substitute for WhatsApp Business Platform access. You may need a compatible WhatsApp provider or API integration to send and receive messages.

Example: Automatically Saving WhatsApp Leads

Imagine that a customer submits a lead form and then starts a WhatsApp conversation.

A connected automation can perform the following tasks:

Receive the new lead information.
Create or update a record in a CRM or spreadsheet.
Notify the sales team.
Trigger an approved WhatsApp message when the necessary conditions are met.
Record the result for future reporting.

Why Use Make?

A visual workflow builder can make it easier to understand how information moves between applications.

However, your total costs depend on the Make plan, operation usage, WhatsApp provider, message charges, and any additional services you connect.

Verdict: Make is a useful option for people who want to connect WhatsApp with other business applications using visual workflows.

10. n8n: Advanced WhatsApp and AI Automation

Website: n8n.io

n8n is a workflow automation platform that lets you connect applications, APIs, databases, and AI services.

It is especially interesting for developers, technical bloggers, automation consultants, and businesses that need more control over their workflows.

Depending on the deployment method and integrations you choose, n8n can support self-hosted automation, custom API connections, and complex multi-step workflows.

What Can You Automate with n8n?

WhatsApp lead capture.
AI-powered customer question handling.
Google Sheets and CRM updates.
Appointment workflows.
Customer support ticket creation.
Automated business reports.
Notifications and approval workflows.

Example: Building an AI WhatsApp Assistant

Consider a business that receives customer questions about its services.

An n8n workflow could connect a supported WhatsApp integration with an AI model and a business knowledge source.

Trigger: Receive an incoming message through a supported integration.
Validation: Check the sender, message type, and event details.
Knowledge retrieval: Retrieve relevant information from an approved source.
AI processing: Generate a response based on the available information.
Validation: Apply business rules and reject unsupported claims.
Reply: Send the response through the configured WhatsApp integration.
Logging: Record the result and notify a human when intervention is needed.

This architecture can reduce repetitive work while keeping the business in control of important decisions.

Does n8n Require Coding?

Many workflows can be built using visual nodes, but more advanced projects may require expressions, JavaScript, API knowledge, or debugging skills.

Self-hosting also requires attention to security, updates, backups, server resources, and uptime.

Is n8n Free?

n8n offers self-hosted and hosted options with different pricing and licensing conditions. A self-hosted installation can reduce platform subscription expenses, but it is not automatically free to operate.

You may still pay for server hosting, AI APIs, WhatsApp messaging, external services, and maintenance.

Review the official n8n pricing page and n8n documentation before deciding which deployment method is appropriate.

Verdict: n8n is a strong candidate for custom AI automation projects when you want flexibility and are comfortable learning how integrations work.

Which WhatsApp Automation Tool Is Best for Your Business?

There is no single winner for every business. The right choice depends on what you want to automate.

Your Requirement	Tools to Investigate
WhatsApp marketing campaigns	AiSensy, Interakt
Customer support team inbox	WATI, Gallabox, Respond.io
Sales conversations and follow-ups	Interakt, DoubleTick
E-commerce messaging	Zoko, Interakt
Custom API integrations	Twilio, n8n
Visual workflow automation	Make, n8n

These are starting points for comparison, not guarantees that every listed feature is available on every plan.

WhatsApp Automation Pricing in India: What Does It Cost?

The total cost of WhatsApp automation depends on more than the software subscription.

A complete budget may include the platform fee, WhatsApp message charges, AI usage, hosting, integrations, and implementation.

1. Platform Subscription

Some providers offer free entry-level access, while advanced features require a paid plan. Team inboxes, campaign tools, AI agents, and higher usage limits may increase the subscription cost.

2. WhatsApp Message Charges

WhatsApp Business Platform pricing depends on factors such as message category, recipient country, and the applicable rate card.

Marketing, utility, and authentication templates may have different charges. Pricing rules can change, so check the latest official rate card and your provider's additional fees before calculating costs.

Start with the official WhatsApp Business Platform pricing page.

3. AI API Costs

If your workflow uses an AI model to generate answers, summarize conversations, or classify customer requests, you may incur additional API charges.

The amount depends on the model, the volume of requests, the size of the prompts, and the complexity of each task.

4. Hosting and Maintenance

Self-hosted workflows may require a server, backups, monitoring, security updates, and maintenance time.

These expenses should be included when comparing a self-hosted workflow with a managed subscription.

Simple Cost Calculation

Use this formula to estimate your monthly budget:

Total monthly cost = Platform subscription + WhatsApp charges + AI usage + Hosting + Integration and maintenance costs.

For example, suppose a business pays ₹2,000 for its automation platform, ₹1,000 for messaging, and ₹500 for AI usage in a particular month.

Its total would be ₹3,500 before any additional hosting, taxes, or maintenance expenses.

This is an illustrative calculation, not a quoted price for any particular provider.

How to Choose the Best WhatsApp Automation Software

Before purchasing a platform, answer these seven questions.

1. What Do You Want to Automate?

Write down your primary objective. Do you need customer support, lead generation, marketing campaigns, order notifications, or an AI assistant?

Choose a platform based on the workflow you need rather than the number of features advertised.

2. Does It Support the Official WhatsApp Business Platform?

Verify how the provider connects to WhatsApp and whether its onboarding process meets your business requirements.

Ask about number migration, coexistence with the WhatsApp Business app where supported, template approval, and account ownership.

3. What Is the Total Cost?

Calculate subscription charges, messaging fees, AI usage, extra agents, and integration expenses.

A low subscription price does not necessarily mean the lowest total cost.

4. Can It Integrate with Your Existing Software?

Check whether the platform connects to your CRM, website, e-commerce store, spreadsheet, or appointment system.

For custom workflows, confirm API access, webhooks, authentication requirements, and integration limits.

5. Can You Transfer Conversations to a Human?

Automation should not trap customers in an endless loop.

Look for a clear handoff process that allows employees to take over complex, sensitive, or urgent conversations.

6. Does It Provide Useful Analytics?

Useful metrics include delivered messages, response times, qualified leads, conversion rates, and unresolved support requests.

Choose metrics that measure actual business outcomes rather than simply counting messages sent.

7. Can You Scale Without Rebuilding Everything?

Consider whether the platform supports additional team members, higher message volumes, more integrations, and stronger monitoring as your business grows.

How to Automate WhatsApp Without Coding

If you are a beginner, you do not need to build a complete AI agent on your first day.

Start with one repetitive task and automate it using a platform that supports your requirements.

Step 1: Choose a Specific Workflow

For example, automate incoming inquiries from customers who want information about your services.

Step 2: Select a Suitable Platform

Compare a ready-made provider such as AiSensy, Interakt, or WATI. Check the current features, onboarding requirements, and costs.

Step 3: Configure Your Business Information

Prepare accurate information about your products, services, operating hours, pricing, and frequently asked questions.

Step 4: Build a Simple Conversation Flow

Create a short workflow that answers common questions and routes customers to the correct department.

Keep the options clear and avoid asking for unnecessary personal information.

Step 5: Connect Your Business Tools

If necessary, connect your CRM, booking application, spreadsheet, or e-commerce system using supported integrations.

Step 6: Test Before Launching

Test normal questions, unexpected inputs, missing information, duplicate events, and situations that require a human agent.

Step 7: Monitor the Results

Track response quality, customer satisfaction, unresolved queries, and operating costs. Improve the workflow using the results.

How to Build an AI-Powered WhatsApp Automation Workflow

If you need more flexibility, you can combine a WhatsApp integration, n8n, and an AI model.

A basic architecture looks like this:

Customer sends a WhatsApp message

↓

WhatsApp integration receives the event

↓

n8n validates the message

↓

AI retrieves relevant business information

↓

Business rules validate the proposed action

↓

Reply is sent through WhatsApp

↓

Conversation is logged or escalated

This is an architectural example. The exact implementation depends on your WhatsApp provider, API permissions, AI service, and business systems.

Important Reliability Rules

Verify incoming webhook events.
Prevent duplicate processing of repeated events.
Keep API credentials secure.
Set sensible timeouts and retry limits.
Validate information before sending customer-facing messages.
Use human approval for consequential actions.
Log failures without exposing sensitive customer data.

For example, an AI assistant can draft a refund recommendation, but a business may require an authorized employee to approve the refund before the transaction occurs.

WhatsApp Automation Rules You Should Know

Businesses should understand the rules that apply to automated WhatsApp messaging before launching campaigns.

Permission: Obtain appropriate consent before sending business-initiated messages.
Approved templates: Use approved message templates when required by WhatsApp's policies.
Customer service window: Follow the applicable rules governing free-form replies and template messages.
Opt-outs: Respect customer requests to stop receiving marketing messages.
Data protection: Collect only the information necessary for your workflow and protect it appropriately.
Platform policies: Review current WhatsApp Business Messaging Policy and applicable local laws.

Automation is not permission to send unsolicited bulk messages. Poor messaging practices can harm customer trust and put your business account at risk.

Review the official WhatsApp Business Messaging Policy before launching a campaign.

Common WhatsApp Automation Mistakes to Avoid

1. Automating Every Conversation

Some conversations require judgment, empathy, or specialist knowledge. Make it easy for customers to reach a human when needed.

2. Using AI Without Reliable Business Data

An AI model can generate incorrect information if it does not have access to reliable product details, current prices, or order records.

Connect it to trusted sources and validate important responses.

3. Ignoring Hidden Costs

Calculate the complete cost of subscriptions, messaging, APIs, hosting, and maintenance before choosing a platform.

4. Sending Too Many Follow-Ups

Unnecessary messages frustrate customers. Use relevant follow-ups, respect opt-outs, and stop messages when a request has been resolved.

5. Failing to Test Error Scenarios

A workflow should handle API errors, missing information, duplicate events, and temporary service interruptions gracefully.

6. Choosing a Tool Before Defining the Problem

Start by identifying the repetitive task you want to eliminate. Then choose the simplest tool that can perform it reliably.

Frequently Asked Questions

1. What are the best WhatsApp automation tools in India?

AiSensy, Interakt, WATI, Gallabox, DoubleTick, Zoko, Respond.io, Twilio, Make, and n8n are worth evaluating for different use cases. The best option depends on your budget, required features, technical skills, and integrations.

2. Is WhatsApp automation free?

Some tools provide free plans or trials, but advanced features, business messaging, AI usage, and hosting can incur charges. Check the current terms of each provider before starting.

3. Can I automate WhatsApp messages without coding?

Yes. Several business messaging platforms offer visual workflow builders, templates, and chatbot tools. Custom integrations may require technical knowledge.

4. Can AI automatically reply to WhatsApp messages?

Yes, if you configure a suitable WhatsApp integration and connect it to an AI service. Reliable implementations should use trusted business information, apply validation rules, and provide a human handoff option.

5. Can I use n8n for WhatsApp automation?

Yes. n8n can connect supported WhatsApp integrations with AI services, databases, spreadsheets, CRMs, and other applications. You must configure the necessary credentials, APIs, and workflow logic.

6. Is WhatsApp automation suitable for small businesses?

Yes. Small businesses can automate common inquiries, lead collection, appointment reminders, and customer notifications. Start with a simple workflow and expand when it produces measurable value.

7. Can WhatsApp automation generate leads?

Yes. A properly configured workflow can collect inquiry details, ask qualifying questions, record leads in a CRM, and notify the sales team. Results depend on the quality of your offer, traffic, messaging, and follow-up process.

8. What is the difference between WhatsApp Business and the WhatsApp Business Platform?

The WhatsApp Business app is designed primarily for businesses managing conversations through the app. The WhatsApp Business Platform provides infrastructure for programmatic messaging and integrations. Available features and coexistence options depend on the current product and provider requirements.

9. Is WhatsApp automation legal in India?

Business messaging can be used lawfully when applicable platform policies, consent requirements, privacy obligations, and other relevant laws are followed. Businesses should obtain appropriate permission and avoid unsolicited bulk messaging.

10. Which WhatsApp automation tool is best for AI agents?

The answer depends on the required integrations and level of customization. Evaluate business messaging platforms with supported AI capabilities or combine a suitable WhatsApp integration with a workflow platform such as n8n. Test response accuracy, security, escalation, and total costs before deployment.

Final Verdict: Which WhatsApp Automation Tool Should You Choose?

WhatsApp automation can help Indian businesses improve customer communication, organize sales inquiries, and reduce repetitive work. However, the right platform depends on the problem you need to solve.

For marketing: Investigate AiSensy and Interakt.
For customer support: Compare WATI, Gallabox, and Respond.io.
For e-commerce: Investigate Zoko and other platforms that support your store.
For custom development: Consider Twilio.
For visual workflow automation: Explore Make and n8n.

Before paying for a subscription, test the platform with a real business workflow and calculate its total operating cost.

Start small, measure the results, and expand your automation only when it improves the customer experience or saves meaningful time.

Which WhatsApp automation tool are you planning to use? Share your preferred tool and the workflow you want to build in the comments.

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How to Automate WhatsApp Business in India (2026): Step-by-Step Guide